激光制备仿生耦合制动毂的摩擦磨损性能  

Friction and wear behavior of bionic coupling brake drum processed by laser

作　　者：宋起飞[1] 刘勇兵[1] 周宏[1] 孙娜[1] 任露泉[2] 

机构地区：[1]吉林大学汽车材料教育部重点实验室,长春130022 [2]吉林大学地面机械仿生技术教育部重点实验室,长春130022

出　　处：《吉林大学学报（工学版）》2007年第5期1069-1073,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：中国博士后科学基金资助项目(2003034350);吉林省科技发展计划项目(20050314-01);吉林大学'985工程'资助项目

摘　　要：为提高汽车用灰铸铁制动毂的耐磨性和使用寿命,运用仿生耦合原理,采用激光雕刻技术在灰铸铁表面加工出点状、条纹状和网格状的非光滑单元体。研究了单元体的显微组织,不同激光加工能量、不同单元体形态的仿生非光滑试样的摩擦磨损性能,以及仿生耦合制动毂在实际工况条件下的使用情况。试验结果表明:仿生耦合制动毂具有优良的耐磨性和较高的摩擦系数,在实际工况下比普通制动毂寿命提高50%以上。To improve the wear resistance and prolong the service life of gray cast iron brake drums, three types of bionic non-smooth units, i.e. spotted units, striated units and latticed units were formed on the surfaces of gray cast iron by bionic coupling laser processing with different amount of laser energy. The microstructure of the bionic unit was examined and the friction and wear behaviors of bionic coupling brake drums were investigated. The results indicate that bionic coupling brake drums had good wear resistance and high friction coefficient. The service life of bionic coupling brake drums were improved by 50% upward compared with normal drums.

关 键 词：金属材料 仿生耦合 灰铸铁 制动毂 摩擦磨损 激光 

分 类 号：TG115.5[金属学及工艺—物理冶金] TH117[金属学及工艺—金属学]